845 search results - page 46 / 169 » Describing and Using Query Capabilities of Heterogeneous Sou... |
PVLDB
2010
13 years 7 months ago
2010
This paper addresses the problem of explaining missing answers in queries that include selection, projection, join, union, aggregation and grouping (SPJUA). Explaining missing ans...
GI
2004
Springer
14 years 2 months ago
2004
Springer
: This paper addresses some classical problems to integrate data sources that are heterogeneous in structure with possibly redundant data along a real world example integrating thr...
ISMB
1998
13 years 10 months ago
1998
Existing query interfaces for biological databases are either based on fixed forms or textual query languages. Users of a fixed form-based query interface are limited to performin...
IJHPCA
2010
13 years 7 months ago
2010
Scientific workflows are frequently being used to model complex phenomena, to analyze instrumental data, to tie together information from distributed sources, and to pursue other ...
FLAIRS
2008
13 years 11 months ago
2008
Ontology alignment is regarded as one of the core tasks in many Web services. It is concerned with finding the correspondences between separate ontologies by identifying concepts ...